TY - JOUR
T1 - Deterministic generation of a two-dimensional cluster state
AU - Larsen, Mikkel Vilsbøll
AU - Guo, Xueshi
AU - Breum, Casper Rubæk
AU - Neergaard-Nielsen, Jonas Schou
AU - Andersen, Ulrik Lund
PY - 2019
Y1 - 2019
N2 - Measurement-based quantum computation offers exponential computational speed-up through simple measurements on a large entangled cluster state. We propose and demonstrate a scalable scheme for the generation of photonic cluster states suitable for universal measurement-based quantum computation. We exploit temporal multiplexing of squeezed light modes, delay loops, and beam-splitter transformations to deterministically generate a cylindrical cluster state with a two-dimensional (2D) topological structure as required for universal quantum information processing. The generated state consists of more than 30,000 entangled modes arranged in a cylindrical lattice with 24 modes on the circumference, defining the input register, and a length of 1250 modes, defining the computation depth. Our demonstrated source of two-dimensional cluster states can be combined with quantum error correction to enable fault-tolerant quantum computation.
AB - Measurement-based quantum computation offers exponential computational speed-up through simple measurements on a large entangled cluster state. We propose and demonstrate a scalable scheme for the generation of photonic cluster states suitable for universal measurement-based quantum computation. We exploit temporal multiplexing of squeezed light modes, delay loops, and beam-splitter transformations to deterministically generate a cylindrical cluster state with a two-dimensional (2D) topological structure as required for universal quantum information processing. The generated state consists of more than 30,000 entangled modes arranged in a cylindrical lattice with 24 modes on the circumference, defining the input register, and a length of 1250 modes, defining the computation depth. Our demonstrated source of two-dimensional cluster states can be combined with quantum error correction to enable fault-tolerant quantum computation.
U2 - 10.1126/science.aay4354
DO - 10.1126/science.aay4354
M3 - Journal article
C2 - 31624213
VL - 366
SP - 369
EP - 372
JO - Science
JF - Science
SN - 0036-8075
IS - 6463
ER -